using Microsoft.EntityFrameworkCore;
using SqrtSpace.SpaceTime.AspNetCore;
using SqrtSpace.SpaceTime.Core;
using SqrtSpace.SpaceTime.EntityFramework;
using SqrtSpace.SpaceTime.Linq;
using SampleWebApi.Data;
using SampleWebApi.Services;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container
builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new() { 
        Title = "SqrtSpace SpaceTime Sample API", 
        Version = "v1",
        Description = "Demonstrates memory-efficient data processing using √n space-time tradeoffs"
    });
});

// Configure SpaceTime services with memory-aware settings
builder.Services.AddSpaceTime(options =>
{
    options.EnableCheckpointing = true;
    options.CheckpointDirectory = Path.Combine(Path.GetTempPath(), "spacetime-sample");
    options.CheckpointStrategy = CheckpointStrategy.SqrtN;
    options.DefaultChunkSize = 1000;
    options.StreamingBufferSize = 64 * 1024; // 64KB
    options.ExternalStorageDirectory = Path.Combine(Path.GetTempPath(), "spacetime-external");
});

// Add Entity Framework with in-memory database for demo
builder.Services.AddDbContext<SampleDbContext>(options =>
{
    options.UseInMemoryDatabase("SampleDb");
    // SpaceTime optimizations are available via EF integration
});

// Add application services
builder.Services.AddScoped<IProductService, ProductService>();
builder.Services.AddScoped<IOrderAnalyticsService, OrderAnalyticsService>();
builder.Services.AddHostedService<DataGeneratorService>();

// Configure memory limits
builder.Services.Configure<SampleWebApi.Models.MemoryOptions>(builder.Configuration.GetSection("MemoryOptions"));

var app = builder.Build();

// Configure the HTTP request pipeline
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

// Enable SpaceTime middleware for automatic memory management
app.UseSpaceTime();

app.MapControllers();

// Ensure database is created and seeded
using (var scope = app.Services.CreateScope())
{
    var context = scope.ServiceProvider.GetRequiredService<SampleDbContext>();
    await DataSeeder.SeedAsync(context);
}

app.Run();